[sugar] abiword, possible memory consumption reduction

[Robert Staudinger]

Hi,

as you may know abiword has a good deal of infrastructure that needs
to be in place before the editing canvas can be used. Libabiword users
therefore have to call libabiword_init() before creating the first
"abiwidget". A libabiword_shutdown()[1] call is provided as well.

Now, is it possible to track the number of open activities of the same
class in sugar? If so, libabiword could be initialised and shut down
on demand. I suspect that _shutdown() is not called at the moment.

[1] not sure if wrapped by pyabiword yet.

Cheers,
Rob